• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

LTSpice KT88 model problem, or schematic?

While I'm waiting for my transformers to come in, I thought I would give LTSpice another shot and play around with some values. I had some trouble with the 12AX7 model in the past, but worked it out. Now I'm trying a KT88 and I'm not really sure what I'm looking at here.

An externally hosted image should be here but it was not working when we last tested it.


Basically I am getting -223KV on the grid. I played around with different values(which is why some of them might seem wacky) to try to get the grid to "move" to see why it's doing this. I detached the signal just in case it was coming from that somehow(impossible with the cap).

Is there something obviously wrong with my schematic or is my KT88 model borked? Someone else on this board had a similar problem, which they fixed by renaming the symbol's pins to match the model. This did not seem to help.